myers



(No Model.)

. H. M. MYERS.

MIL K STERILIZERQ 7 N0. 555,657. 5 Paten iged M3123, 1896.

ATTORNEYS A UNITED STATES 'ATENT OFFICE.

HARRY M. MYERS, OF NEWARK, NEWV JERSEY, ASSIGNOR OF ONE-HALF TO JAMES T. MYERS, OF SAME PLACE.

MlLK-STERILIZER.

SPECIFICATION foiming part of Letters Patent No. 555,657, dated March 3, 1896.

Application filed January 4, 1896. Serial No. 574,305. (No model.)

To. all whom it may concern:

Be it known that I, HARRY M. MYERS, a citizen of the United States, residing in Newark, county of EsseX,and State of New Jersey, have invented certain new and useful Improve- 1n ents in Milk-Sterilizers; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertaius to make and use the same, reference being had to the accompanying drawings, and to letters of reference marked thereon, which form a part of this specification.

The object of my invention is to provide a milk-sterilizin g apparatus of simple construction, easily handled and operated, and by means of which the milk is sterilized without being removed from the milk-can.

The invention consists in the improved milk-sterilizing apparatus and in the combination and arrangement of the various parts thereof, substantially as will be hereinafter more fully described and claimed.

Referring to the accompanying drawings, Figure 1 is a vertical central section through my improved apparatus, certain portions being shown in elevation and others broken away. Fig. 2 is a top plan View of Fig. 1, a portion of the lid being removed; Fig. 3, a front elevation of Fig. 1, the milk-can being in position; and Fig. 4:, a top plan view of a modified form of heater used in connection with my improved sterilizer.

In said drawings, arepresents a receptacle, preferably round, lined, as at g, with copper, zinc, or any suitable material, and provided with a top or lid is, also lined, as at p, and preferably hinged to said receptacle, as at i, the lid to be air-tight on said receptacle.

In the receptacle is arranged the steamchamber I), supported on legs 0, and in communication with the steam supply and exhaust through pipes g and f, respectively, each provided with a valve, as clearly shown.

The steam-chamber b, which is provided with a central raised portion e, communicates with a series of upwardly-extending pipes cl and d and thus forms a cylindrical chamber A, adapted to receive and fit around the milk can A, which latter is supported by the raised portion e.

A steam vent or outlet h is arranged at or near the top of said pipes for a purpose hereinafter described.

In Fig. 4 the pipes d and d are illustrated as being alternately connected by pipes 61 and (1- in which case each series is provided with a steam-outlet d (1 The lid is provided with two opening I and 0, in which are arranged the plunger m and the thermometer 7", respectively.

The operation .is as follows: The milk-can A, after its cover has been removed, is placed in the cylindrical chamber A and on the raised portion 6, as indicated in Fig. 2. The steam vent or outlet h is now opened and the lid K is hermetically closed down upon the receptacle a. The steam which passes and circulates through the chamber 1) and e and the upright pipes d and d heats the milk in the can, which during the process of sterilizing (from about nine to fifteen minutes) is several times slowly stirred by means of the plunger m. WVhen the thermometer indicates the temperature of about 185, the process is interrupted, the can removed and replaced by another one to be sterilized. The process of sterilizing is done under pressure of steam. The outlet h being open, steam escapes and as the lid 14: fits air-tight on the outer receptacle a accumulates in and fills the said receptacle a, as will be manifest.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a milk-sterilizing apparatus, the combination with the receptacle and its lid, of a circular steam-chamber in said receptacle and having a central raised portion of smaller diameter than the diameter of the steam-chamber, a series of upwardly-extending pipes communicating with said steamchamber and forming a cylindrical chamber, an inlet and an exhaust communicating with the steamchamber, and a steam vent or outlet at or near the upper end of one of said pipes, all said parts, substantially as and for the purposes described.

2. In a milk-sterilizing apparatus, the combination with the receptacle, of a metal lining in said receptacle, a lid metal lined and adapted to fit air-tight on said receptacle, a circular steam-chamber in said receptacle and provided With a central raised portion, a series of upwardly-extending pipes, forming a cylindrical chamber and communicating with the steam-chamber, a steam inlet and exhaust communicating with the steam-chamber, and a steam Vent or outlet at or near the upper end of one of said pipes, all said parts, substantially as and for the purposes described.

3. In a milk-sterilizing apparatus, the combination with the receptacle and its lid of a circular steam-chamber in said receptacle and having a central raised portion of smaller diameter than the diameter of the steam-chamber, a series of upwardly-extending pipes communicating with said steam-chamber and forming a cylindrical chamber, an inlet and an exhaust communicating With the steamchamber, a series of pipes alternately connecting the upper portions of the upwardly-extending pipes, and steam-vents communicating with said pipes, all said parts, substantially as and for the purposes described.

In testimony that I claim the foregoing I have hereunto set my hand this 31st day of December, 1895.

HARRY M. MYERS.

W'itnesses:

WM. D. BELL, JAMES T. MYERS. 

